Arrangement of the winding of electromagnetic clutches.



PATENTED AUG. 18, 190

7 H. AST. ARRANGEMENT OF THE WINDING OF ELECTROMAGNETIC CLUTGHES.

APPLICATION FILED JUNE 15,1906.

2 SHEETS-EHEE'I 1.

No. 896,608. PATENTED AUG. 18, 1908. H. AST.

ARRANGEMENT OF-THE WINDING OF ELECTROMAGNETIC GLUTGHES.

I APPLICATION FILED JUNE 15,1906.

2 SHEETS-SHEET 2.

l g a 1 I qqm in v I fl P h UNITED STATES PATENT OFFICE.

HEINRICH AST, OF VIENNA, AUSTRIA-HUNGARY, ASSIGNOR TO THE FIRM VULKAN MASOHINENFABRIKS-ACTIEN-GESELLSOHAFT, OF VIENNA, AUSTRIA-HUNGARY.

ARRANGEMENT OF THE WINDING OF ELECTROMAGNETIC CiLUTGIIES.

Specification of Letters Patent.

Patented Aug. 18, 1908,

Application filed June 15, 1906. Serial No. 321,869.

magnet l)()( y through the twisting or relativeangular movement thereof, and therefore the ends of the windings tear and the insulation becomes damaged. Moreover when the heat produced in the interior of the windings by the electric current exceeds a certain amount,

' breakdowns are caused which necessitate interruptions in working; this can only be. obviated practically by conducting awaythe heat, for augmentation of the windings to effect this purpose would be disadvantageous on account of the increased costs of production.

The present invention relates to arrangements of winding in which to obviate the said disadvantages the winding is placed in a sepa rate sheath or casing which is secured in the ragnet body in a way that prevents twisting or relative angular movement and at the same time affords a firm hold to the ends of the windin s while to facilitate the eflective cooling of the winding the external surface of the casing is augmented by channeling.

The accompanying illustrative drawings show electromagnetic clutches with various constructions for attaining the desirable results referred to. I

Figure 1 is a longitudinal section of an electromagnetic clutch; and Fig.2 is a transverse section on the line II, Fig. 1.

In the drawin 1c is one ofthe clutch members or magnet body, and is mounted upon the shaft g; 7c is the other clutch member, and is mounted upon the shaft 9. Both members carry respectively annular friction members h, h whic are drawn together with the clutch members it, it throu hthe action of the current passing through the winding w and comin from brushes i through contact rings T e winding w is fixed to an annular casing a which is provided on its internal face with projections 1) adapted to fit into tact rings corresponding recesses in the magnet body k and thereby prevent relative angular movement or twisting of the casing with the winding when alterations of speed take place or when the clutch is thrown into or out of operation. L

The side wall of the casing is rovided with pocket like recesses c in which t e ends of the windings to, which are advantageously con: structed in the form of connecting plates, can bearranged well insulated.

Figs. 3, 4 and 5 show in transverse section, elevation and plan respectively, a modified construction, of the arrangement of the winding in which the projections b are hollow-and are formed with recesses c at one end so that windingends comprising connecting plates (Z of the angle form shown in Figs. 6 and 7 can be conveniently arranged therein without an increase of the winding being necessary.

The connecting plates (1 are turned over at the top of the vertical side piece, as at d, for i the purpose of connecting to the said lates d the two leads Z and Z coming from t e conj to the winding casing of the magnet body k.

The end of the winding '10, when under-, i

neath as shown in Fig. 6, is laid in and soldered to the angle of the connecting plate d; while if on top as shown in Fig. 7, it is held in and soldered to the other end of-the turned over portion (1 of said connectin plate.

Fig. 8 shows a piece of a win ing casing a in which the rojections b are located on the outer edges of the side walls of the casing.

Fi s. 9 and. 10 show winding arrangements in which, for the purpose of providing air assages f and obtaining increased outer surace for leading off heat, the casing a is divided' into two or more parts, which are arranged next to each other and for which the projections b if desired are common. In this arrangement a part of the winding is laid in each part of the casing. The ventilation and leading off of heat can be facilitated by. dividing up the spaces f between the casings into channels by radial or 1 .upon the outside of these surfaces, as shown in Figs. 12 and-13, so as to augment the 'outer surface of the casing and thereby allow the heat to be rapidly conducted away and ventilation of the winding to be facilitated.

' Claims:

1. In electro-inagnetic clutches: a magnet body; a winding; an annular, channel-shaped casin adapted to retain said winding; and a loc ring member or members projecting therefrom, adapted to lock said casing to the magnet body in such a manner as to prevent relative angular movement or twisting of same with respect to said magnet body.

2. In. electro-magnetic clutches: a winding; an annular, channel -shaped casing adapted to retain said winding; and pocket like recesses therein adapted to retain the ends of said winding.

3. In electro-magnetic clutches: a wind ing; an annular, channel shaped casing ada ted to retain said windin lateral poc (ct like recesses therein adapted to retain the ends of the said winding; and a locking member or members projecting from said casing.

4. In electro-magnetic clutches: a winding; an annular, channel shaped casin poc et like recesses therein; and connecting plates arranged therein and forming the ends ing; an annular, channel shaped casing adapted to retain said winding; lateral adapted to retain said winding; laterapocket like recesses therein adapted to retain the endsof the said winding; and means in connection with said casing to promote ventilation of same and assist in the dissipation of the heat.

6. In electro-magnetic clutches: a wind ing: a series of adjacent, annular, channelshaped casings adapted/to retain said winding, and providing intermediate air spaces; and a locking member or members projecting from said casings.

7. In electro-magnetic clutches: a winding; a series of adjacent, annular channeling, and providing ntermediate air spaces; a locking member projecting from said casings; and walls in connection therewith adapted to promote ventilation of same and assist in the dissipation of the heat.

.8. In electro-magnetic clutches: a winding; a number of adjacent casings adapted to retain said winding; and radial'or slopingv transverse walls between said casings forming channels, for the purpose of ventilation and dissipation of the heat.

In testimony whereof l have hereunto set my hand in presence of two subscribing witnesses. I

HEINRICH AST. Witnesses JosEF RUBARc'rI, ALVESTO S. Hoeun.

shaped casings adapted to retain said wind 

